RX antenna - 4-way switch KIT assembling

This revision is from 2018/01/10 21:09. You can Restore it.

← Back to Index | ← Web page

rev.1.0 2/2012 by Jan OK2ZAW

Schematic

  • This switch is controlled by NEGATIVE VOLTAGE: -12V!

Board

Board Assembling

  • Use right resistors!
  • for 50 Ohm coax line use 2 x 100R/2W
  • for 75 Ohm coax line use 2 x 150R/2W

  • Place LED diode in right polarity!
  • Longer leg is + and is connected to GND on PCB.

  • Common mode current choke construction
  • Wind 4 turns on one side than cross to another side of cores and wind rest turns.